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ASTM A182 F53 WNRF Flange Class 150 To 2500 High Pressure Pipe Connection

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ASTM A182 F53 WNRF Flange Class 150 To 2500 High Pressure Pipe Connection

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Brand Name :	YUHONG
Model Number :	ASTM A182 F53
Certification :	API, PED
Price :	Negotiable
Payment Terms :	,L/C,T/T
Supply Ability :	100Tons/Month
Delivery Time :	According to quantity

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ASTM A182 F53 WNRF Flange Class 150 To 2500 High Pressure Pipe Connection

ASTM A182 F53 Super Duplex Stainless Steel Weld Neck Raised Face Flange

Product Overview

ASTM A182 F53 (UNS S32750) Super Duplex Stainless Steel Weld Neck Raised Face (WNRF) flanges deliver exceptional strength and chloride corrosion resistance. Ideal for offshore, chemical processing, and sour gas pipelines operating at temperatures from -60°C to 300°C. Manufactured under ISO 9001:2015 quality system.

Chemical Composition (Weight %)

Element	Min	Max	Typical Value
Chromium (Cr)	24.0%	26.0%	25.2%
Nickel (Ni)	6.0%	8.0%	7.0%
Molybdenum (Mo)	3.0%	4.0%	3.8%
Nitrogen (N)	0.24%	0.32%	0.28%
Manganese (Mn)	-	1.2%	0.5%
PREN①	≥40		42

Mechanical Properties

Property	Value	Test Standard
Tensile Strength	≥ 795 MPa (115 ksi)	ASTM A370
Yield Strength (0.2% Offset)	≥ 550 MPa (80 ksi)	ASTM A370
Elongation (% in 50mm)	≥ 15%	ASTM A370
Hardness (Brinell)	≤ 290 HBW	ASTM E10
Charpy V-Notch Impact	≥ 100 J @ -46°C	ASTM A370

Key Advantages of F53 WNRF Flanges

Feature	Competitive Edge
Corrosion Resistance	Resists pitting/crevice corrosion in seawater (Cl- > 20,000 ppm)
Stress Corrosion Cracking (SCC) Resistance	Exceeds NACE MR0175/ISO 15156 requirements for H2S environments
High Strength	2x yield strength vs. 316L stainless steel, enabling thinner/lightweight designs
Weldability	Low carbon content (0.03% max) prevents sensitization during welding
Dimensional Precision	CNC-machined sealing faces (Ra ≤ 3.2 μm) ensure leak-free ASME B16.5 RF

Application Fields

Oil & Gas:

Subsea Christmas tree components
Sour gas gathering pipelines (H2S partial pressure > 0.3 psi)
FPSO (Floating Production Storage Offloading) system

Chemical Processing:

Chlorine dioxide bleaching plants
Sulfuric acid coolers (65-98% concentration)

Power Generation:

Seawater-cooled condenser headers
Flue gas desulfurization (FGD) scrubbers

Desalination Plants:

High-pressure RO (Reverse Osmosis) membrane housings

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